/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.ziav.rpc.utils;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

/** InternalThreadFactory. */
public class NamedThreadFactory implements ThreadFactory {

  protected static final AtomicInteger POOL_SEQ = new AtomicInteger(1);

  protected final AtomicInteger mThreadNum = new AtomicInteger(1);

  protected final String mPrefix;

  protected final boolean mDaemon;

  protected final ThreadGroup mGroup;

  public NamedThreadFactory() {
    this("pool-" + POOL_SEQ.getAndIncrement(), false);
  }

  public NamedThreadFactory(String prefix) {
    this(prefix, false);
  }

  public NamedThreadFactory(String prefix, boolean daemon) {
    mPrefix = prefix + "-thread-";
    mDaemon = daemon;
    SecurityManager s = System.getSecurityManager();
    mGroup = (s == null) ? Thread.currentThread().getThreadGroup() : s.getThreadGroup();
  }

  @Override
  public Thread newThread(Runnable runnable) {
    String name = mPrefix + mThreadNum.getAndIncrement();
    Thread ret = new Thread(mGroup, runnable, name, 0);
    ret.setDaemon(mDaemon);
    return ret;
  }

  public ThreadGroup getThreadGroup() {
    return mGroup;
  }
}
